2009: Bieber and Baldwin met at a fan event.

According to 234Star.com, Bieber and Baldwin first met at a fan event (for Bieber, not Baldwin) in 2009. Baldwin, who was 12 at the time, was there with her father Steve Baldwin and kept her arms firmly crossed throughout their entire encounter. Love did not exactly seem to be in the air, but a lot can change in nine years.

February 2011: Baldwin attended another Bieber event.

Steve Baldwin brought his daughter to the New York City premiere of "Never Say Never" in 2011.

"I was never a superfan, of him or of anyone," Baldwin later explained in an interview with Vogue. "It was never that crazed, screaming thing. I didn't think about it in any kind of way except for the fact that he was cute. Everybody had a crush on him. But for the first few years we had a weird age gap."

3/

November 2014: Bieber and Baldwin went to church together.

In November 2014, Bieber and Baldwin were spotted together at Hillsong church (with Kendall Jenner), which sparked speculation that they were dating. Around the same time, Bieber had broken up with his on-again, off-again girlfriend, Selena Gomez. This was not Bieber and Gomez's first breakup, and it wouldn't be their last.

4/

December 2014: Bieber and Baldwin fended off dating rumors.

After being seen together at church, Bieber and Baldwin denied any romantic involvement. In an interview with E! News, Baldwin said, "I've known [Bieber] since I was so young — since I was like 13 — and we've just been good friends over the years. We have just stayed close and there's nothing more to it than that."

December 2015: Baldwin went on vacation with Bieber's family.

Throughout the tropical vacation, Bieber posted a flurry of photos with Baldwin, his father, and his siblings — including one fan-favorite video of Bieber teasing Baldwin while she poses for the camera.

8/

January 2016: Bieber and Baldwin spent another New Year's Eve together — but in a more romantic way.

February 2016: Bieber and Baldwin discussed their relationship.

Bieber and Baldwin kinda-sorta confirmed their relationship in separate interviews after ringing in 2016 together. In an interview with GQ, Bieber said that Baldwin is someone who he "really love[s]," but also said that he didn't want to "commit" to anything.

Baldwin also confirmed that she and Bieber were dating, but not official, around the same time.

"We are not an exclusive couple. He's about to go on tour," she told E! News. "Relationships at this age are already complicated, but I don't really like to talk about it because it's between me and him."

Clearly, both Bieber and Baldwin tried to avoid saying that they were officially dating. But Bieber also hinted that he might like to marry Baldwin one day, saying, "I know that in the past I've hurt people and said things that I didn't mean to make them happy in the moment. So now I'm just more so looking at the future, making sure I'm not damaging them. What if Hailey ends up being the girl I'm gonna marry, right?"

Right.

10/

Sometime between February and August 2016, the two fell out.

Baldwin later told Vogue that, while she understood their relationship was not serious or exclusive, things ended very badly between them.

"Negative things happened that we still need to talk about and work through," she said in an interview published January 2019.

"'Fizzled' would not be the right word — it was more like a very dramatic excommunication. There was a period where if I walked into a room, he would walk out."

11/

August 2016: Bieber started dating Sofia Richie.

Whatever had been going on between Bieber and Baldwin in early 2016 was over by August of that year, when Bieber unfollowed Baldwin on Instagram and started dating Sofia Richie.

Bieber and Richie didn't date for very long — in fact, they were broken up by September — but Bieber and Baldwin's friendship remained in limbo for almost two years.

June 2018: Bieber and Baldwin reconnected.

"The common denominator, I promise you, is always church," Baldwin told Vogue. "By then we were past the drama. I just gave him a hug. By the end of the conference, he was like, 'We're not going to be friends.' I was like, 'We're not?'"

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June 2018: They became the king and queen of PDA.

Throughout the month of June, Bieber and Baldwin embarked on a public unconfirmed-relationship tour unlike any other.

July 9, 2018: Bieber confirmed his engagement to Baldwin.

"Was gonna wait a while to say anything but word travels fast, listen plain and simple Hailey I am soooo in love with everything about you!" he wrote. "So committed to spending my life getting to know every single part of you loving you patiently and kindly."

"In the end, Justin wanted something that would gracefully accentuate Hailey's beautifully shaped hands," Solow told People. "We settled on an oval stone that was just exceptional in its length and grace."

21/

Sometime in September 2018, the couple moved in together.

Bieber and Baldwin in September.
James Devaney/GC Images

According to an interview with Vogue, published in January 2019, Baldwin moved into Bieber's home just outside Toronto in September. The magazine also reports that they quickly began "squabbling over decorating decisions."

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September 13, 2018: Bieber and Baldwin were reportedly spotted at a New York City courthouse where marriage licenses are issued.

A clip of the singer shows him saying, "That's the love of my life right there," while looking at Baldwin and strumming on his guitar.

An eyewitness told E! News: "They were very affectionate, stopping on street corners to pull each other in close to kiss. They never let each other get too far and were always touching each other and laughing."

February 7, 2019: The Biebers appeared together on the cover of Vogue.

"We're coming from a really genuine place," Baldwin said. "But we're two young people who are learning as we go."

"I'm not going to sit here and lie and say it's all a magical fantasy," she continued. "It's always going to be hard. It's a choice. You don't feel it every single day. You don't wake up every day saying, 'I'm absolutely so in love and you are perfect.' That's not what being married is. But there's something beautiful about it anyway — about wanting to fight for something, commit to building with someone."

Sara Hendricks contributed reporting to an earlier version of this story.